
\begingroup
\centering
\begin{tabular}{lcccc}
   \toprule
                                & (1)           & (2)      & (3)     & (4)\\  
   $\textbf{Phosphorus (unfiltered)}$\\
   IHS restored wetland (acres) & 0.003$^{***}$ & -0.0002  & 0.0008  & -0.0008\\   
                                & (0.0009)      & (0.0009) & (0.001) & (0.001)\\   
   Ever-treated                 &               &          & X       & X\\  
    \\
   Dependent variable mean      & 0.20523       & 0.21463  & 0.25615 & 0.26492\\  
   Observations                 & 419,199       & 332,404  & 38,980  & 35,946\\  
   Adjusted R$^2$               & 0.23044       & 0.25534  & 0.32531 & 0.33076\\  
\end{tabular}
\par\endgroup


